石料资源特性对颚破粗集料针片状颗粒含量的影响
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摘要
为探索石料资源特性与加工后粗集料针片状颗粒含量的影响关系,统计分析了7种硬岩样本经颚式破碎机破碎后的粗集料针片状颗粒含量,并测试了石料表观密度、单轴抗压强度、压碎值和维氏硬度值等资源特性,进而分析了石料资源特性对粗集料针片状颗粒含量的影响.结果表明:粗集料针片状颗粒含量随石料表观密度、单轴抗压强度和维氏硬度值的增大而减小,随压碎值的增大而增大;石料压碎值、维氏硬度值与针片状颗粒含量具有良好的相关性.
The effect of stone resource characteristics on flatness and elongation ratio of coarse aggregate was studied. A statistical analysis was conducted for investigating the flatness and elongation ratio in seven kinds of processed aggregates using jaw crusher. Properties then such as apparent density, uniaxial compressive strength, crushing value and Vickers hardness value were measured, from which the relationships between the resource characteristics and flatness and elongation ratio are developed. The results indicate that with the increase of apparent density, uniaxial compressive strength, and Vickers hardness, the flatness and elongation ratio decreases. However, a positive relationship is found between the crushing value and the flatness and elongation ratio. A high correlation is observed between the crushing value, Vickers hardness value and the flatness and elongation ratio.
The effect of stone resource characteristics on flatness and elongation ratio of coarse aggregate was studied. A statistical analysis was conducted for investigating the flatness and elongation ratio in seven kinds of processed aggregates using jaw crusher. Properties then such as apparent density, uniaxial compressive strength, crushing value and Vickers hardness value were measured, from which the relationships between the resource characteristics and flatness and elongation ratio are developed. The results indicate that with the increase of apparent density, uniaxial compressive strength, and Vickers hardness, the flatness and elongation ratio decreases. However, a positive relationship is found between the crushing value and the flatness and elongation ratio. A high correlation is observed between the crushing value, Vickers hardness value and the flatness and elongation ratio.
引文
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[2] LIU Yufeng,HUANG Yucheng,SUN Wenjuan,et al.Effect of coarse aggregate morphology on the mechanical properties of stone matrix asphalt[J].Construction and Building Materials,2017,152:48-56.
[3] SARA A,ANA P,INGE H.Effect of aggregate petrology on the durability of asphalt pavements[J].Construction and Building Materials,2017,146:652-657.
[4] 谭乐.硅质石灰岩的抗滑性能研究[D].上海:同济大学,2012.TAN Le.Research on skid resistance of silicious limestone[D].Shanghai:Tongji University,2012.(in Chinese)
[5] BHARAT R,DHARAMVEER S.Comparison of shape parameters and laboratory performance of coarse aggregates produced from different types of crushing operations[J].Journal of Materials in Civil Engineering,2017,29(7):1-14.
[6] BOUQUETY M N,DESCANTES Y,BARCELO L,et al.Experimental study of crushed aggregate shape[J].Construction and Building Materials,2017,21:865-872.
[7] 任永利,刘涛,梁锡三.沥青路面集料加工质量控制[J].长安大学学报(自然科学版),2008,28(1):37-40.REN Yongli,LIU Tao,LIANG Xisan.Quality control for aggregate handling in asphalt pavement construction[J].Journal of Chang'an University(Natural Science),2008,28(1):37-40.(in Chinese)
[8] PAUL K O,KAMYAR C M,MICHAEL R A.Flat and elongated aggregates in superpave regime[J].Journal of Materials in Civil Engineering,2000,12(2):124-130.
[9] 谢兆星,李鼎乐,韩森,等.针片状颗粒含量对沥青混合料性能的影响[J].建筑材料学报,2007,10(6):736-739.XIE Zhaoxing,LI Dingle,HAN Sen,et al.Influence of percentage of flat and elongated particles on performance of asphalt mixture[J].Journal of Building Materials,2007,10(6):736-739.(in Chinese)
[10] 姜红.路用集料加工设备选型及加工工艺研究[D].西安:长安大学,2015.JIANG Hong.Research on processing equipment selection and processing technology of road aggregate[D].Xi'an:Chang'an University,2015.(in Chinese)
[11] 陈林.云南省高速公路沥青路面集料加工质量控制研究[D].西安:长安大学,2017.CHEN Lin.Study on quality control of highway asphalt surface aggregate processing in Yunnan province[D].Xi'an:Chang'an University,2017.(in Chinese)
[12] 张建,杨立峰.路用二级破碎石料的生产工艺试验[J].青海大学学报,2002,20(2):29-32.ZHANG Jian,YANG Lifeng.The experiment of the technical producing in the second-class stone-breaking factory for roads[J].Journal of Qinghai University,2002,20(2):29-32.(in Chinese)
[13] 沈小俊,石飞,李铁军,等.沥青路面集料标准化加工技术和工艺探讨[J].公路与汽运,2014,161(2):126-128.SHEN Xiaojun,SHI Fei,LI Tiejun,et al.Study of technique and technology for aggregate processing standardization in asphalt pavement[J].Highways and Automotive Applications,2014,161(2):126-128.(in Chinese)
[14] 李晓燕,卜胤,汪海年,等.粗集料形态特征的定量评价指标研究[J].建筑材料学报,2015,18(3):524-530.LI Xiaoyan,BU Yin,WANG Hainian,et al.Research on quantitative evaluation of morphological characteristic of coarse aggregates[J].Journal of Building Materials,2015,18(3):524-530.(in Chinese)
[15] 刘振清,杨永顺,刘清泉,等.沥青路面粗集料棱角性表征方法及技术标准[J].中国公路学报,2010,23(4):8-14.LIU Zhenqing,YANG Yongshun,LIU Qingquan,et al.Coarse aggregate angularity description method and technical standard of asphalt pavement[J].China Journal of Highway and Transport,2010,23(4):8-14.(in Chinese)
[16] DHARAMVEER S,MUSHARRAF Z,SESH C.Comparison of morphological properties of different types of coarse aggregates[C]//Airfield and Highway Pavement2013:Sustainable and Efficient Pavements.Los Angeles:Airfield and Highway Pavement Conference,2013:1254-1263.
[17] 彭秋乐.粗集料压碎值影响因素研究[D].重庆:重庆大学,2013.PENG Qiule.Research the influence factors of coarse aggregate crushing value[D].Chongqing:Chongqing University,2013.(in Chinese)
[18] 张争奇,李卓琳,李卫勇,等.基于高速公路养护的石料场规划研究[J].重庆交通大学学报(自然科学版),2017,46(9):44-49.ZHANG Zhengqi,LI Zhuolin,LI Weiyong,et al.Stone field planning based on expressway maintenance[J].Journal of Chongqing University(Natural Science),2017,46(9):44-49.(in Chinese)
[19] 窦明健.公路工程地质[M].北京:人民交通出版社,2013:5-12.DOU Mingjian.Highway engineering geology[M].Beijing:China Communications Press,2013:5-12.(in Chinese)
[20] 丛林,卞绍辉,谭乐.基于维氏硬度的粗集料磨光值衰减模型[J].建筑材料学报,2014,17(2):351-354.CONG Lin,BIAN Shaohui,TAN Le.Attenuation modle of polishing value of coarse aggregate based vickers hardness[J].Journal of Building Materials,2014,17(2):351-354.(in Chinese)